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41c7e96f1a
* In order to prevent ArrayBuffers from getting garbage collected by V8, we used to store a v8::Persistent<ArrayBuffer> in a map. This patch introduces a custom ArrayBuffer allocator which doesn't use Persistent handles, but instead stores a pointer to the actual ArrayBuffer data alongside with a reference count. Since creating Persistent handles has quite a bit of overhead, this change significantly increases performance. Various HTTP server benchmarks report about 5-10% more requests per second than before. * Previously the Persistent handle that prevented garbage collection had to be released manually, and this wasn't always done, which was causing memory leaks. This has been resolved by introducing a new `PinnedBuf` type in both Rust and C++ that automatically re-enables garbage collection when it goes out of scope. * Zero-copy buffers are now correctly wrapped in an Option if there is a possibility that they're not present. This clears up a correctness issue where we were creating zero-length slices from a null pointer, which is against the rules.
109 lines
2.3 KiB
Text
109 lines
2.3 KiB
Text
# Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
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import("//deno.gni")
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import("//third_party/v8/gni/v8.gni")
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config("deno_config") {
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include_dirs = [ "//third_party/v8" ] # This allows us to v8/src/base/ libraries.
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configs = [ "//third_party/v8:external_config" ]
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cflags = []
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if (is_debug) {
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defines = [ "DEBUG" ]
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}
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if (is_clang) {
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cflags += [
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"-fcolor-diagnostics",
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"-fansi-escape-codes",
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]
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if (is_debug) {
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cflags += [ "-glldb" ]
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}
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}
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if (is_win) {
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# The `/Zl` ("omit default library name") flag makes the compiler produce
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# object files that can link with both the static and dynamic CRT.
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cflags += [ "/Zl" ]
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}
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}
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v8_source_set("v8") {
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deps = [
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"//third_party/v8:v8",
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"//third_party/v8:v8_libbase",
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"//third_party/v8:v8_libplatform",
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"//third_party/v8:v8_libsampler",
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]
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configs = [ ":deno_config" ]
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}
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# Only functionality needed for libdeno_test and snapshot_creator
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# In particular no flatbuffers, no assets, no rust, no msg handlers.
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# Because snapshots are slow, it's important that snapshot_creator's
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# dependencies are minimal.
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v8_source_set("libdeno") {
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sources = [
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"api.cc",
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"binding.cc",
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"buffer.h",
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"deno.h",
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"exceptions.cc",
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"exceptions.h",
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"file_util.cc",
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"file_util.h",
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"internal.h",
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"modules.cc",
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]
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deps = [
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":v8",
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]
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configs = [ ":deno_config" ]
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}
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# The cargo-driven build links with libdeno to pull in all non-rust code.
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v8_static_library("libdeno_static_lib") {
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output_name = "libdeno"
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deps = [
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":libdeno",
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"//build/config:shared_library_deps",
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]
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configs = [ ":deno_config" ]
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}
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v8_executable("snapshot_creator") {
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sources = [
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"snapshot_creator.cc",
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]
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deps = [
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":libdeno",
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]
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configs = [ ":deno_config" ]
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}
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v8_executable("libdeno_test") {
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testonly = true
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sources = [
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"file_util_test.cc",
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"libdeno_test.cc",
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"modules_test.cc",
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"test.cc",
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]
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deps = [
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":libdeno",
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":snapshot_test",
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"//testing/gtest:gtest",
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]
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data = [
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"$target_gen_dir/snapshot_test.bin",
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]
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snapshot_path = rebase_path(data[0], root_build_dir)
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defines = [ "SNAPSHOT_PATH=\"$snapshot_path\"" ]
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configs = [ ":deno_config" ]
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}
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# Generates $target_gen_dir/snapshot_test.bin
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snapshot("snapshot_test") {
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testonly = true
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source_root = "libdeno_test.js"
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}
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